Malicious PDF — malware analysis report

Static analysis result for SHA-256 d107a1afa83f4023…

MALICIOUS

PDF

48.9 KB Created: 2020-08-11 01:51:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 4981655c3e56f12492e9b209bf1620be SHA-1: f7a6a3d08fec075901fac6ceca0aa0bb0d5f6567 SHA-256: d107a1afa83f40231c321397acb4ec9d729eb9b02456e014aeb9684fd1f08b3c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.ru'. The document body, though heavily obfuscated, contains a URL that matches this redirector. The PDF also contains a mass external PDF link farm, with many links hosted on cdn.shopify.com, suggesting an attempt to manipulate search engine results or distribute content widely. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.ru/pify?keyword=antonyms+and+synonyms+list+with+meaning+in+bengali+pdf In PDF document text
    • http://files.meilensteinwein.ch/uploads/1/3/2/8/132814935/fefimefekafiruwixo.pdfIn PDF document text
    • http://files.lanagates.com/uploads/1/3/0/7/130775825/zaneredikajolawaba.pdfIn PDF document text
    • http://files.nonamemotorsports.com/uploads/1/3/1/3/131380666/meginukutotaboli.pdfIn PDF document text
    • http://files.katascuba.com/uploads/1/3/1/4/131483253/5349126.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1021/9432/files/logiratiwumoxovitesunupu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9721/8471/files/norma_035_riesgos_psicosociales.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3259/8938/files/cbse_sample_paper_2020_class_12_physics.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4746/0768/files/keleropozojopu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/9506/8567/files/automatic_voltage_regulator_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/51189386949.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1048/2591/files/vajubopezowo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2380/9187/files/agenda_setting_kebijakan_publik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2312/3100/files/67444180612.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7003/7924/files/gebuzijovobe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5040/1945/files/voxadolasexojeze.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000703b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x703B 5472 bytes
SHA-256: 4af4e33ce5ca6dd3ecccfa518d3bf70b67472ef83c19045ec3a7b9ab03a4613e
font_01_sfnt_off000082c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82C4 11024 bytes
SHA-256: 65d006b725cf95e7f7fde36d7e1fc851f4db01df25765b01bead45fa9ab3b9bc
font_02_sfnt_off0000a810.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA810 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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